-/* yx_uint16.h
+/* yx_uint16.h
*
- * Structs and routines for coordinates and movement in 2-dimensional space
- * (such as the ncurses screen and game maps).
+ * Structs and routines for coordinates and movement in 2-dimensional space
+ * (such as the ncurses screen and game maps).
*/
#ifndef YX_UINT16_H
#define YX_UINT16_H
-#include <stdint.h>
+
+
+#include <stdint.h> /* for uint16_t */
+
+
/* Coordinates for maps of max. 65536x65536 cells. */
struct yx_uint16
uint16_t x;
};
-/* This encodes directions. */
-
+/* Directions available for movement. */
enum dir
{
NORTH = 1,
- EAST = 2,
- SOUTH = 3,
- WEST = 4
+ EAST,
+ SOUTH,
+ WEST
};
/* Return 1 if two yx_uint16 coordinates a and b are equal, else 0. */